I.S. EN 1643:2014

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
5 Units of measurement and
  test conditions
6 Construction requirements
7 Performance
8 EMC/Electrical requirements
9 Marking, installation and
  operating instructions
Annex A (informative) - Gas connections
        in common use in the various countries
Annex B (informative) - Leak-tightness
        test - volumetric method
Annex C (informative) - Leak-tightness
        test - pressure loss method
Annex D (normative) - Conversion of
        pressure loss into leakage rate
Annex E (normative) - Electrical/electronic
        component fault modes
Annex F (normative) - Additional requirements for
        safety accessories and pressure accessories
        as defined in EU Directive 97/23/EC
Annex G (normative) - Materials for pressurized parts
Annex H (informative) - Additional materials for
        pressurized parts
Annex I (normative) - Requirements for controls
        used in DC supplied gas burners and gas
        burning Appliances
Annex J (normative) - Method for the determination
        of a Safety Integrity Level (SIL)
Annex K (normative) - Method for the determination
        of a Performance Level (PL)
Annex L (informative) - Relationship between
        Safety Integrity Level (SIL) and
        Performance Level (PL)
Annex AA (informative) - Application Guidance
Annex ZA (informative) - Relationship between
         this European Standard and the Essential
         Requirements of EU Directive 2009/142/EC
         relating to appliances burning gaseous fuels
Bibliography

Defines safety, constructional and performance requirements of valve-proving systems, hereafter referred to as VPS, intended for use with gas burners and gas-burning appliances.